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Module 7: Server Cluster Maintenance and Troubleshooting

Module 7: Server Cluster Maintenance and Troubleshooting. Overview. Cluster Maintenance Troubleshooting Cluster Service. Cluster Maintenance. Backup Restoring the First Node Restoring Cluster Disks Restoring the Second Node Evicting a Node. Backup. Backing Up the System State

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Module 7: Server Cluster Maintenance and Troubleshooting

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  1. Module 7: Server Cluster Maintenance and Troubleshooting

  2. Overview • Cluster Maintenance • Troubleshooting Cluster Service

  3. Cluster Maintenance • Backup • Restoring the First Node • Restoring Cluster Disks • Restoring the Second Node • Evicting a Node

  4. Backup • Backing Up the System State • Backing Up the Local Disk • Backing Up the Cluster Disk

  5. Restoring the First Node Steps For Restoring a Server Cluster: • Restore the first node • Restore the cluster disks • Restore the second node • Perform node testing

  6. Restoring Cluster Disks • Restoring Disk Signature Files • Restoring the Data on the Cluster Disk • Restoring the Cluster Configuration Files

  7. Restoring the Second Node • Restoring the Remaining Node(s) of a Cluster • Perform Node Testing

  8. Evicting a Node Steps for Evicting a Node • Back up both nodes • Verify backup • Move all groups to the remaining node • Stop Cluster service on the node to be removed • Evict the node • Unplug the server from the shared bus

  9. Troubleshooting Cluster Service • Troubleshooting Tools • Examining the Cluster Log • Troubleshooting Network Communications • SCSI Configuration Problems • Group and Resource Failures • Quorum Log Corruption

  10. Troubleshooting Tools • Disk Manager • Task Manager • Performance Monitor • Network Monitor • Dr. Watson • Services Snap-in

  11. Copy of cluster - Wordpad File Edit View Insert Format Help timestamp event description 000003b8.000003b4::2000/10/02-19:44:12.946 [CS] Cluster Service started – Cluster Node Vers 000003b8.000003b4::2000/10/02-19:44:12.946 OS Version 5.0.21 000003b8.000002f0::2000/10/02-19:44:12.957 [CS] Service Starting… 000003b8.000002f0::2000/10/02-19:44:13.007 [EP] Initialization… 000003b8.000002f0::2000/10/02-19:44:13.057 [DM]: Initialization 000003b8.000002f0::2000/10/02-19:44:13.097 [DM]: Loading cluster database form D:\WINNT\clu 000003b8.000002f0::2000/10/02-19:44:13.397 [DM] DmpStartFlusher: Entry 000003b8.000002f0::2000/10/02-19:44:13.397 [DM] DmpStartFlusher: thread created 000003b8.000002f0::2000/10/02-19:44:13.427 [NM] Initializing… 000003b8.000002f0::2000/10/02-19:44:13.427 [NM] Local node name = SERVER1. 000003b8.000002f0::2000/10/02-19:44:13.427 [NM] Local node ID = 1. 000003b8.000002f0::2000/10/02-19:44:13.427 [NM] Creating object for node 1 (SERVER1) 000003b8.000002f0::2000/10/02-19:44:13.437 [NM] Initializing networks. 000003b8.000002f0::2000/10/02-19:44:13.447 [NM] Initializing network interfaces. 000003b8.000002f0::2000/10/02-19:44:13.788 [NM] Initializing complete. 000003b8.000002f0::2000/10/02-19:44:13.848 [NM] Starting worker thread… 000003b8.000002f0::2000/10/02-19:44:13.848 [API] Initializing 000003b8.000002f0::2000/10/02-19:44:13.848 [FM] Worker thread running 000003b8.000002f0::2000/10/02-19:44:13.878 [LM] :LMInitialize Entry. 000003b8.000002f0::2000/10/02-19:44:13.878 [LM] :TimerActInitialize Entry. 000003b8.000002f0::2000/10/02-19:44:13.878 [CS] Service Domain Account = clusservice@mocmoc 000003b8.000002f0::2000/10/02-19:44:13.878 [CS] Initializing RPC server. 000003b8.000002f0::2000/10/02-19:44:14.038 [INIT] Attempting to join cluster MYCLUSTER 000003b8.000002f0::2000/10/02-19:44:14.048 [JOIN] Spawning thread to connect to sponsor 10. 000003b8.000002f0::2000/10/02-19:44:14.048 [JOIN] Spawning thread to connect to sponsor 169 The IDs of the process and thread issuing the log entry event description Creates a new cluster group Examining the Cluster Log

  12. Troubleshooting Network Communications • Troubleshooting Node-to-Node Communication • Verify RPC Communication’s • Verify Cluster Heartbeats • Troubleshooting Client-to-Node Communications • Check NetBT Cache with Nbtstat • Ping IP Address • WINS Static Mappings

  13. SCSI Configuration Problems • SCSI Controllers • SCSI Terminiation • SCSI Cabling

  14. Cluster Administrator – [MYCLUSTER (MYCLUSTER)] File View Window Help Name State Owner Reso MYCLUSTER Groups Cluster Group Mygroup SQL Group Resources Cluster Configuration SERVER1 SERVER2 Cluster IP Address Online SERVER2 IP Ad Cluster Name Online SERVER2 Netw Disk W: Online SERVER2 Physi Printer Spooler Online SERVER2 Print Public Failed SERVER2 File S NUM For Help, press F1 Group and Resource Failures

  15. Quorum Log Corruption • Reset the Quorum Log • Clussvc –debug -resetquorumlog • Delete the Quorum Log • -noquorumlogging

  16. Lab A: Cluster Maintenance

  17. Review • Cluster Maintenance • Troubleshooting Cluster Service

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